NOT RECOMMENDED for use in enclosed fixtures, may shorten lamp life. SEE ADDITIONAL INFORMATION SECTION for Dimming Performance Information.

2 Pack (multi-pack priced per bulb)

Full Specs

Brand

U Lighting America

Energy Used

A rating, expressed in watts, to indicate the rate at which a lamp consumes energy. Also known as wattage value.

Energy Used

15 Watts

Volts

A measure of "electrical pressure" between two points. The voltage specification of an incandescent lamp is the electrical "pressure" required to drive it at its designed point. The "voltage" of a ballast (e.g. 120 V) refers to the line voltage coming from the power source and is connected to the ballast.

Volts

120

Base

The end (or ends) of the lamp that fits into the socket.

Base

Medium (E26)

Bulb Shape

The description of the general appearance of a lamp/bulb consists of a letter(s) followed by a number. The letter indicates the shape of the bulb and the number relates to the diameter of the bulb in eighths of an inch. For example, a common household bulb is the A-19. The bulb is "A" shape and the diameter would be nineteen 8ths of an inch, or 2 3/8".

Bulb Shape

Spiral

Bulb Color

The color of the light produced by a bulb

Bulb Color

Warm White

CRI

Color Rendering Index is an international system used to rate a lamp's ability to render object colors. The higher the CRI (based upon a 0-100 scale) the richer and more accurately colors generally appear. CRI differences among lamps are not usually visible to the eye unless the difference is more than 3-5 points.

CRI

82

Color Temperature (Kelvin)

An expression of the hue of the light emitted, measured in degrees Kelvin. Usually expressed by a four digit number followed by (k), such as 2700k. Higher temperatures indicate whiter, "cooler" colors, while lower temperatures indicate yellower, "warmer" colors. Some common Kelvin temperature benchmarks are 2700k (warm white), 3500k (neutral white), 4100k (cool white), 5000k (bright white), and 6500k (daylight).

Color Temperature (Kelvin)

2700

Brightness (Lumens)

A rating of the initial light output of a bulb, rated after 100 hrs of operation. Lumens are a measure of how much light falls on one square foot of area, one foot away from the light source.

Brightness (Lumens)

1100

Bulb Finish

The surface finish of a bulb, which may affect the quality of the light emitted.

Bulb Finish

Opaque

Bulb Technology

The technology implemented by the bulb, e.g. incandescent, halogen, LED

Bulb Technology

CFL

Average Rated Life (hr)

A measurement of the average length of time, between first use and the point when 50% of the lamps tested have stopped functioning, , using an operating cycle of 3 hours on, 20 minutes off.

Average Rated Life (hr)

8000

Length (in)

Also referred to as "Maximum Overall Length" (MOL). For light bulbs, it measures the length of a light bulb, from the top of the bulb to the bottom of the base or pins and is typically expressed in inches. For light fixtures and ballasts, it applies to the total horizontal length of the item.

Length (in)

4.8

Diameter (in)

Light bulbs: a measurement of a bulb's width taken at the widest point of the bulb. Fixtures: the measurement across the widest point of a circular fixture.

Diameter (in)

2.4

ENERGY STAR Certified

ENERGY STAR is a program created jointly by the U.S, Environmental Protection Agency and the U.S. Department of Energy to help people save money and protect the environment by using energy-efficient electronics and appliances. ENERGY STAR-certified devices use less energy without compromising functionality.

ENERGY STAR Certified

Yes

Dimmable

Indicates whether a bulb can be dimmed in conjunction with a suitable dimmer control.

Product Notes: Please Test Small Quantities Before Investing in a Large Purchase. No Dimmable CFL Product Performs Like Traditional Incandescent or Halogen Bulbs. Dimmable CFL Bulbs May Not Work Well With Your Dimmer Switch and Even Those That Are Compatible Produce Noticeable Dimming Only Between 20-50% of Total Output. Traditional Bulbs Typically Dim from 0-100%, Dimmable CFL's Do Not. ALSO, NO OTHER/NO ADDITIONAL DISCOUNT OFFERS APPLY.

Good product too pricey

4

Used in a reading lamp

Cfl Dan

Baltimore md

2013-11-14

Yes

Works as expected with no problems

5

I have seen some comments on this site that various bulbs, including this one, hum or buzz. I have been using this bulb daily for several weeks. It is completely silent. I am pleased with this bulb. I replaced an incandescent bulb in a bedroom lamp that is on an X-10 automation/remote control system. It is bright and works well with this system.

Cuulblu

North Carolina

2012-07-09

Yes

Not good

1

the first bulb burned out after three months and the second fickered and then smelled and died.

I would purchase this item again

I need bulbs for a dimable candelabra, but the shades are only 4". This doesn't say what the length of the bulb is. The lamp info says it takes 5 x 100 watt medium base bulbs. Any information you have would be appreciated.
Thanhks!
Deidre McNamara

2012-02-05

The length of the bulb is 4.8" including the base.

2012-02-06

Product Support

Will these work and fit in recessed lighting 4" downlights

2011-01-28

A: The overall length of this bulb is 4.8", including the base. This should fit in the recessed fixture. We do recommend that the fixture not be enclosed and have proper ventilation. The bulbs contains an integrated ballast and if too much heat builds up in the fixture then it will shorten the life of the bulb.